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Building Construction Lab
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A lab that makes concrete buildings resistant to earthquakes and long-lasting.
AboutAbout the lab
Protecting people's safety and property for the long term
The Building Construction Lab develops high-performance members and structures, mainly for buildings made of concrete, and studies design methods for them.
The lab aims to protect the safety and property of the people who use buildings against earthquakes, fires, deterioration, and other hazards, and to provide comfortable spaces over a long period of time.
The lab combines structural experiments using scaled specimens with computer-based numerical analysis such as the finite element method.
The lab is also called the Tani Lab, and on its website it invites people to "come and hear more."
Key terms
- shear wall
- A strong wall placed inside a building to resist the lateral forces of an earthquake
- piloti
- A building design in which the ground floor is an open space with columns and few walls, often used for parking
- finite element method
- A method of dividing an object into small elements and using a computer to calculate how forces act on it and how it deforms
ResearchResearch themes
To protect the safety and property of building users against earthquakes, fires, deterioration, and other hazards, the lab develops members and structures for buildings such as reinforced concrete and prestressed concrete buildings, and studies design methods for them.
*Illustrative imageShear walls subjected to forces from three directions
During an earthquake, a shear wall also deforms in the direction perpendicular to the wall, and the vertical force on it changes, but current design hardly takes this into account. Through experiments applying force from three directions, the lab clarifies the effects on how the wall fails and on its strength, and proposes a better design method.
*Illustrative imagePiloti buildings damaged in the Kumamoto earthquake
In the 2016 Kumamoto earthquake, piloti buildings built to the new seismic standards also suffered major damage. Through experiments on scaled specimens that imitate the failed columns and through analysis of whole buildings, the lab investigates the mechanism by which damage concentrated on the first floor, and is also studying the effect of structural slits.
*Illustrative imageSteel partially strengthened by heat treatment
Induction heat treatment, which rapidly heats steel by electromagnetic induction and then cools it, can strengthen part of a piece of metal. The lab studies the structural performance of braces, dampers, and other members that have undergone this heat treatment.
*Illustrative imageFailure behavior of columns with wing walls
Columns with wing walls that satisfy the new evaluation approach have been little studied, and the differences between actual members and scaled models also need to be confirmed. Through experiments, the lab has shown that the reinforcing bars at the edge of the wing wall bend and then fracture, causing a large drop in strength, and is now advancing the analysis.
MembersFaculty
- ProfessorMasanori Tani
- Assistant ProfessorYuichi Sato
- Assistant ProfessorRyo Yamada
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Reinforced concrete rusted rebars german bunkers Pointe du Hoc” Jebulon / CC0 (cropped)
- Shear walls subjected to forces from three directions: “Cut Mark Blackburn, Shear Bank Road Wall South” Ray Hutchings / CC BY-SA 4.0 (cropped)
- Piloti buildings damaged in the Kumamoto earthquake: “Aso house damaged by the 2016 Kumamoto earthquake 2” hanonimas / CC BY-SA 3.0 (cropped)
- Steel partially strengthened by heat treatment: “Bar square steel” Supersonic0714 / CC BY-SA 3.0 (cropped)
- Failure behavior of columns with wing walls: “August 17, 1999 Izmit earthquake Adapazari (1)” NOAA National Geophysical Data Center / Public domain (cropped)
- Related lab (建築安全制御学): “Earthquake damage in San Francisco's Marina District on the north side of the city from the Loma Prieta Earthquake” Nancy Wong / CC BY-SA 3.0 (cropped)
- Related lab (環境材料学): “FOT9558 Haltepunkt Leipzig Anger-Crottendorf 2024 – Sichtbeton im Treppenaufgang Süd” August Geyler / CC BY-SA 4.0 (cropped)
- Related lab (建築保全再生学): “Fukuoka Parco Main Bldg the seismic retrofit Tenjin 2-chōme Chūō-ku Fukuoka 20240812” Hirho / CC BY-SA 4.0 (cropped)
- Related lab (地震環境工学): “Overview Seismic Waves” LukeTriton, Steven Earle, Mario Bačić, Lovorka Librić, Danijela Jurić Kaćunić, Meho Saša Kovačević / CC BY-SA 4.0 (cropped)
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